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You can follow the discussion on Reprogramming Vaisala RS-41 Radiosondes to Transmit APRS, RTTY, CW in the Ham or ISM Bands without having to leave a comment. Cool, huh? Just enter your email address in the form here below and you’re all set.

Thomas { No, you can see it here https://twitter .com/usa_satcom /following favorites stuff all the time that is conspiracy theories and such. That's fine for personal accounts but if ... } – Feb 21, 6:57 PM

Ernst Vondelaar { This antenna works like a charm on NOAA, Meteor-M2 and ISS. It works even better if you add reflectors below the V-dipole: six of the ... } – Feb 21, 10:28 AM

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What is RTL-SDR

The RTL-SDR is an ultra cheap software defined radio based on DVB-T TV tuners with RTL2832U chips. The RTL-SDR can be used as a wide band radio scanner. It may interest ham radio enthusiasts, hardware hackers, tinkerers and anyone interested in RF.